Oscilloscope channel addition problem. read the followingoscilloscope settings carefully. suppose you display a 1 khz, 2 vsine wave in channel a and a dc, 1v signal in channel b withsensitivities set on 1v/div. you select 'add' so that the twosignals are combined and you readjust the position so the trace isin the middle of the screen. if you switch the signal in channel bfrom dc to ac, what will happen? (draw a picture if it .)a. the trace jumps down 2 divisions. b.the trace jumps down 1 divisionc. the trace jumps up 1 division. d.nothing happens

Study the following reaction carefully. what classification should this reaction have? 4al + 3o2 2al2o3synthesisdecompositionsingle replacementdouble displacement

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer